A-A+
According to the periodic table ______still s
问题详情
According to the periodic table, ______still some elements undiscovered.
A．there seem to be
B．it seems to be
C．it seems that
D．there seem
参考答案
正确答案：A
解析：句意：根据周期表可知，有些元素仍然未被发现。本题考查there be句型的变化。There be结构中的谓语动词可以是“be going to／seem to／happen to…+be (原形)。”故本题选A。若选B、C，句子成分不完整。
